Here are some links to articles that prove usefull when you have interference problems. Our club just resolved a 3rd order mix situation that had been going on for quite some time. As a result we had to dig up some information, so I figured I'd share that.
http://www.qsl.net/kb9mwr/files/tech/Intermodulation_Revisited.pdf http://www.qsl.net/kb9mwr/files/tech/CATV_Leakage-A_Two_Way_Street.pdf http://www.qsl.net/kb9mwr/files/tech/Tracing_And-Eliminating_Power_Line_Interference.pdf --- In [email protected], Robert Glenn <[EMAIL PROTECTED]> wrote: > > Just sharing an experience maybe others can use... > > Been having periodic interference to my two meter repeater off and on (daily) > for about five years. Certain times of the day, no problem, and then something > would happen and I would get a carrier near the input frequency that was a > product of the transmitter (had CTCSS) and it would lock the repeater up. > There was no particular pattern and it was hard to be there when it was > happening. Since I have multiple receivers, I just kept the local receiver > off. It was strong around the site, so I figured someone in the area had a > messed up TV amp or something. > > Well, the other day I was at the repeater site & it started up. I took a > portable monitoring the input & narrowed it down to the generator control > panel. Inside the control panel was a small smart trickel charger used to keep > the starting battery for the generator charged. > > That was where the problem was. When it was charging, no interference, but when > it was in standby mode - wow - lots of signal. When I unplugged the charger, it > went away. > > So, a couple of ferrite beads on the power cords and the problem was solved. > Those of you having problems at sites with back-up power, don't overlook the > genset. > > Robert > -- > You can only buy so many bags of lime before people begin asking questions... > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
